Question

Out of monochloro, monobromo, and monoiodo derivatives of ethane, the most reactive compound towards nucleophilic substitutions will be:

• A. $C_2{H}_{5}Br$
• B. $C_2{H}_{5}Cl$
• C. $C_2{H}_{5}I$
• D. All are equally reactive

Answer 1

The correct option is C $C_2{H}_{5}I$

$(C-I)$ is a weak bond and $I^{\ominus }$ is a better leaving group.